Fixed incorrect preferred height and alignment

Author: litefeel

Assets/BitmapFontImporter/Editor/BFImporter.cs

@@ -59,8 +59,10 @@ public static void DoImportBitmapFont(string fntPatn)
 
             SerializedObject so = new SerializedObject(font);
             so.Update();
-            so.FindProperty("m_FontSize").floatValue = parse.fontSize;
+            so.FindProperty("m_FontSize").floatValue = Mathf.Abs(parse.fontSize);
             so.FindProperty("m_LineSpacing").floatValue = parse.lineHeight;
+            so.FindProperty("m_Descent").floatValue = parse.lineBaseHeight - parse.lineHeight;
+            so.FindProperty("m_Ascent").floatValue =  parse.lineBaseHeight;
             UpdateKernings(so, parse.kernings);
             so.ApplyModifiedProperties();
             so.SetIsDifferentCacheDirty();

Assets/BitmapFontImporter/Editor/FntParse.cs

@@ -286,7 +286,7 @@ private CharacterInfo CreateCharInfo(int id, int x, int y, int w, int h, int xo,
 
             Rect vert = new Rect();
             vert.x = xo;
-            vert.y = yo;
+            vert.y = yo - lineBaseHeight;
             vert.width = w;
             vert.height = h;
             vert.y = -vert.y;